dave_oddballs
ray and oddball keeper !!
well id start with a group of around 6 but remember if you don't want deaths on your hands, you will have to watch for them pairing off, as if and when they do they will want the others out of there and commonly ends in death. bleheri will get to around 8" so if the 6 get bigger it will be a bit tight. with that sized tank (37 g) id honestly say you'd be a lot better with assam or orientalis.